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Technical Discussions This forum is for technical discussions related to customizing your Tahoe/Yukon

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Old 04-01-2017, 02:46 PM   #1
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Join Date: Apr 2017
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Default Yukon 4wd

Hey guys,

New user. And I have a problem with the truck I love.

I have a 98 Yukon 4WD- and all my lights appear to be working.

When I hit '4hi' button, I can hear the actuator engage and the 4hi button goes solid.

When I go into neutral and then try 4 lo, it just blinks and then goes back to 4hi. No sound.

I put it on jacks and put it in 4hi, and only the rear wheels spin.

I don't think it actually engages at all. All the fuses look good.

I'm thinking TCCM, Transfer Case Motor or Actuator. (But it appears to work in 4hi)

Any ideas? Thank you!
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